📄 ai-sdk/docs/reference/ai-sdk-core/generate-id
File: generate-id.md | Updated: 11/15/2025
Source: https://ai-sdk.dev/docs/reference/ai-sdk-core/generate-id
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v5 (Latest)
AI SDK 5.x
Model Context Protocol (MCP) Tools
Experimental_StdioMCPTransport
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Generates a unique identifier. You can optionally provide the length of the ID.
This is the same id generator used by the AI SDK.
import { generateId } from 'ai';
const id = generateId();
import { generateId } from "ai"
Parameters
size:
number
The length of the generated ID. It defaults to 16. This parameter is deprecated and will be removed in the next major version.
Returns
A string representing the generated ID.
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